The battle has been going on, many soldiers have been obviously tired, especially at noon, many soldiers began to appear hungry, in order to let the fortress continue to maintain combat effectiveness, Ah Yong had no choice but to let the reserve force temporarily replace, although the combat effectiveness of the reserve force is not as strong as theirs but they are not weak, and in the zombie army, seeing that the director of Sky City who had just been replaced, immediately decided to carry out a large-scale mutant zombie attack, after all, a lot of ordinary zombies have been lost, although the number of zombie armies exceeds 100 million, But I can't afford to consume it, and now the city wall has been piled up for more than forty meters, although it is still a lot, but if the mutant zombies rush up now, it will definitely disrupt their defenses, although it may not be able to break through the city wall, but it can give themselves some respite, so the director quickly ordered, the mutant zombies are excited in the zombie army, after all, they have not dared to show their heads, they are very aggrieved in the corpse tide, and the position of human beings is condescending, and there is a risk of being named, it is better to do your best and fight!

"Report! There are hundreds of bone blade zombies and hundreds of giant zombies rushing over, what should we do!? What fire-breathing zombies, giant axe zombies, and all kinds of monsters are in the back! Seeing the mutant zombies rushing towards the fortress, everyone panicked instantly, and they didn't know who to aim at for a while, "Don't panic, everyone!" Keep fighting the zombies! Artillery array ready! Fight a wave of mutant zombies! ”

"The artillery array understands!" Ah Yong's order reached the rear artillery array and quickly aimed at the mutant zombies, and carried out a covering strike, many mutant zombies were killed under the indiscriminate bombardment of the artillery array, and those fish that slipped through the net were quickly killed by snipers!

"Damn!" The director was furious when he saw the heavy losses of the zombie army, and he once again ordered the zombie army to strike at the city in the sky, and those mutant zombies began to charge forward without their lives, followed by those ordinary zombies, due to their short stature and slow movement, even if they run, they are not much faster than walking, and some zombies are not killed by human bullets at all, but are trampled to death by their companions or directly knocked to death!

"Roar!" The mutant zombies roared and rushed towards the fortress wall, and the snipers quickly pulled the trigger to stop their advance, but the mutant zombies still managed to advance to a hundred meters away from the city wall, after all, there were too many of them to snipe at all, and those giant zombies who arrived under the city made a shocking scene, those giant zombies actually bent down and grabbed an ordinary zombie, and threw it into the fortress while running!

"Quick! Stop them! The soldiers on the city wall panicked when they saw this scene, and quickly set fire to the giant zombies, but the giant zombies blocked their arms in front of their heads, so as not to let themselves be fatally hit, of course, they also felt pain, but compared to death, the pain was nothing at all, those captured zombies were headless one by one, and smashed from the air to the ground into a mess of flesh, many zombies did not fly into the fortress at all, but hit the city wall alive, however, among the many zombies, there were still a few successes, An ordinary zombie was still crawling tenaciously after his thighs were removed, and he came to the feet of a soldier who was focused on shooting and attacking the zombies outside the city walls, and bit down hard! The screams of the soldiers were like a fuse, many soldiers were bitten by zombies, and suddenly there was chaos on the city wall, and many soldiers didn't know whether to point their guns at the zombies pouring up below or the zombies that had entered the fortress and the city walls! The defense of the entire Sky City collapsed because of more than a dozen ordinary zombies and red-skinned zombies thrown up by giant zombies, some soldiers continued to fight the zombies that surged up below, but they were attacked by the red-skinned zombies on the city wall, and some soldiers attacked the zombies on the city wall, but the zombie's flesh became extremely fragile because of long-term decay, and the bullets flew out directly through the brain and hit the team members, and some even jumped off the city wall and became deserters!

"Don't panic, everyone!" Seeing that the soldiers were panicked, Ah Yong couldn't sit still, he quickly took out his pistol and directly shot the three zombies closest to him in the head, "Everyone, steady!" Yong took out his knife and quickly entered the mutated form, rushed towards the zombies on the city wall and quickly eliminated them! But Ah Yong never expected that just after solving a crisis, another crisis came again, because the corpse wall was too high, the bone blade zombie with strong bounce power jumped directly to the city wall, and the sky in the distance was no longer a blue sky and white clouds, replaced by zombie birds covering the sky!